/*! ColVis 1.1.1
 * ©2010-2014 SpryMedia Ltd - datatables.net/license
 */

/**
 * @summary     ColVis
 * @description Controls for column visibility in DataTables
 * @version     1.1.1
 * @file        dataTables.colReorder.js
 * @author      SpryMedia Ltd (www.sprymedia.co.uk)
 * @contact     www.sprymedia.co.uk/contact
 * @copyright   Copyright 2010-2014 SpryMedia Ltd.
 *
 * This source file is free software, available under the following license:
 *   MIT license - http://datatables.net/license/mit
 *
 * This source file is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.
 *
 * For details please refer to: http://www.datatables.net
 */


(function(window, document, undefined) {


var factory = function( $, DataTable ) {
"use strict";

/**
 * ColVis provides column visibility control for DataTables
 *
 * @class ColVis
 * @constructor
 * @param {object} DataTables settings object. With DataTables 1.10 this can
 *   also be and API instance, table node, jQuery collection or jQuery selector.
 * @param {object} ColVis configuration options
 */
var ColVis = function( oDTSettings, oInit )
{
  /* Santiy check that we are a new instance */
  if ( !this.CLASS || this.CLASS != "ColVis" )
  {
    alert( "Warning: ColVis must be initialised with the keyword 'new'" );
  }

  if ( typeof oInit == 'undefined' )
  {
    oInit = {};
  }

  if ( $.fn.dataTable.camelToHungarian ) {
    $.fn.dataTable.camelToHungarian( ColVis.defaults, oInit );
  }


  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * Public class variables
   * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

  /**
   * @namespace Settings object which contains customisable information for
   *     ColVis instance. Augmented by ColVis.defaults
   */
  this.s = {
    /**
     * DataTables settings object
     *  @property dt
     *  @type     Object
     *  @default  null
     */
    "dt": null,

    /**
     * Customisation object
     *  @property oInit
     *  @type     Object
     *  @default  passed in
     */
    "oInit": oInit,

    /**
     * Flag to say if the collection is hidden
     *  @property hidden
     *  @type     boolean
     *  @default  true
     */
    "hidden": true,

    /**
     * Store the original visibility settings so they could be restored
     *  @property abOriginal
     *  @type     Array
     *  @default  []
     */
    "abOriginal": []
  };


  /**
   * @namespace Common and useful DOM elements for the class instance
   */
  this.dom = {
    /**
     * Wrapper for the button - given back to DataTables as the node to insert
     *  @property wrapper
     *  @type     Node
     *  @default  null
     */
    "wrapper": null,

    /**
     * Activation button
     *  @property button
     *  @type     Node
     *  @default  null
     */
    "button": null,

    /**
     * Collection list node
     *  @property collection
     *  @type     Node
     *  @default  null
     */
    "collection": null,

    /**
     * Background node used for shading the display and event capturing
     *  @property background
     *  @type     Node
     *  @default  null
     */
    "background": null,

    /**
     * Element to position over the activation button to catch mouse events when using mouseover
     *  @property catcher
     *  @type     Node
     *  @default  null
     */
    "catcher": null,

    /**
     * List of button elements
     *  @property buttons
     *  @type     Array
     *  @default  []
     */
    "buttons": [],

    /**
     * List of group button elements
     *  @property groupButtons
     *  @type     Array
     *  @default  []
     */
    "groupButtons": [],

    /**
     * Restore button
     *  @property restore
     *  @type     Node
     *  @default  null
     */
    "restore": null
  };

  /* Store global reference */
  ColVis.aInstances.push( this );

  /* Constructor logic */
  this.s.dt = $.fn.dataTable.Api ?
    new $.fn.dataTable.Api( oDTSettings ).settings()[0] :
    oDTSettings;

  this._fnConstruct( oInit );
  return this;
};



ColVis.prototype = {
  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * Public methods
   * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

  /**
   * Get the ColVis instance's control button so it can be injected into the
   * DOM
   *  @method  button
   *  @returns {node} ColVis button
   */
  button: function ()
  {
    return this.dom.wrapper;
  },

  /**
   * Alias of `rebuild` for backwards compatibility
   *  @method  fnRebuild
   */
  "fnRebuild": function ()
  {
    this.rebuild();
  },

  /**
   * Rebuild the list of buttons for this instance (i.e. if there is a column
   * header update)
   *  @method  fnRebuild
   */
  rebuild: function ()
  {
    /* Remove the old buttons */
    for ( var i=this.dom.buttons.length-1 ; i>=0 ; i-- ) {
      this.dom.collection.removeChild( this.dom.buttons[i] );
    }
    this.dom.buttons.splice( 0, this.dom.buttons.length );

    if ( this.dom.restore ) {
      this.dom.restore.parentNode( this.dom.restore );
    }

    /* Re-add them (this is not the optimal way of doing this, it is fast and effective) */
    this._fnAddGroups();
    this._fnAddButtons();

    /* Update the checkboxes */
    this._fnDrawCallback();
  },


  /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
   * Private methods (they are of course public in JS, but recommended as private)
   * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

  /**
   * Constructor logic
   *  @method  _fnConstruct
   *  @returns void
   *  @private
   */
  "_fnConstruct": function ( init )
  {
    this._fnApplyCustomisation( init );

    var that = this;
    var i, iLen;
    this.dom.wrapper = document.createElement('div');
    this.dom.wrapper.className = "ColVis";

    this.dom.button = $( '<button />', {
        'class': !this.s.dt.bJUI ?
          "ColVis_Button ColVis_MasterButton" :
          "ColVis_Button ColVis_MasterButton ui-button ui-state-default"
      } )
      .append( '<span>'+this.s.buttonText+'</span>' )
      .bind( this.s.activate=="mouseover" ? "mouseover" : "click", function (e) {
        e.preventDefault();
        that._fnCollectionShow();
      } )
      .appendTo( this.dom.wrapper )[0];

    this.dom.catcher = this._fnDomCatcher();
    this.dom.collection = this._fnDomCollection();
    this.dom.background = this._fnDomBackground();

    this._fnAddGroups();
    this._fnAddButtons();

    /* Store the original visibility information */
    for ( i=0, iLen=this.s.dt.aoColumns.length ; i<iLen ; i++ )
    {
      this.s.abOriginal.push( this.s.dt.aoColumns[i].bVisible );
    }

    /* Update on each draw */
    this.s.dt.aoDrawCallback.push( {
      "fn": function () {
        that._fnDrawCallback.call( that );
      },
      "sName": "ColVis"
    } );

    /* If columns are reordered, then we need to update our exclude list and
     * rebuild the displayed list
     */
    $(this.s.dt.oInstance).bind( 'column-reorder', function ( e, oSettings, oReorder ) {
      for ( i=0, iLen=that.s.aiExclude.length ; i<iLen ; i++ ) {
        that.s.aiExclude[i] = oReorder.aiInvertMapping[ that.s.aiExclude[i] ];
      }

      var mStore = that.s.abOriginal.splice( oReorder.iFrom, 1 )[0];
      that.s.abOriginal.splice( oReorder.iTo, 0, mStore );

      that.fnRebuild();
    } );

    // Set the initial state
    this._fnDrawCallback();
  },


  /**
   * Apply any customisation to the settings from the DataTables initialisation
   *  @method  _fnApplyCustomisation
   *  @returns void
   *  @private
   */
  "_fnApplyCustomisation": function ( init )
  {
    $.extend( true, this.s, ColVis.defaults, init );

    // Slightly messy overlap for the camelCase notation
    if ( ! this.s.showAll && this.s.bShowAll ) {
      this.s.showAll = this.s.sShowAll;
    }

    if ( ! this.s.restore && this.s.bRestore ) {
      this.s.restore = this.s.sRestore;
    }

    // CamelCase to Hungarian for the column groups
    var groups = this.s.groups;
    var hungarianGroups = this.s.aoGroups;
    if ( groups ) {
      for ( var i=0, ien=groups.length ; i<ien ; i++ ) {
        if ( groups[i].title ) {
          hungarianGroups[i].sTitle = groups[i].title;
        }
        if ( groups[i].columns ) {
          hungarianGroups[i].aiColumns = groups[i].columns;
        }
      }
    }
  },


  /**
   * On each table draw, check the visibility checkboxes as needed. This allows any process to
   * update the table's column visibility and ColVis will still be accurate.
   *  @method  _fnDrawCallback
   *  @returns void
   *  @private
   */
  "_fnDrawCallback": function ()
  {
    var columns = this.s.dt.aoColumns;
    var buttons = this.dom.buttons;
    var groups = this.s.aoGroups;
    var button;

    for ( var i=0, ien=buttons.length ; i<ien ; i++ ) {
      button = buttons[i];

      if ( button.__columnIdx !== undefined ) {
        $('input', button).prop( 'checked', columns[ button.__columnIdx ].bVisible );
      }
    }

    var allVisible = function ( columnIndeces ) {
      for ( var k=0, kLen=columnIndeces.length ; k<kLen ; k++ )
      {
        if (  columns[columnIndeces[k]].bVisible === false ) { return false; }
      }
      return true;
    };
    var allHidden = function ( columnIndeces ) {
      for ( var m=0 , mLen=columnIndeces.length ; m<mLen ; m++ )
      {
        if ( columns[columnIndeces[m]].bVisible === true ) { return false; }
      }
      return true;
    };

    for ( var j=0, jLen=groups.length ; j<jLen ; j++ )
    {
      if ( allVisible(groups[j].aiColumns) )
      {
        $('input', this.dom.groupButtons[j]).prop('checked', true);
        $('input', this.dom.groupButtons[j]).prop('indeterminate', false);
      }
      else if ( allHidden(groups[j].aiColumns) )
      {
        $('input', this.dom.groupButtons[j]).prop('checked', false);
        $('input', this.dom.groupButtons[j]).prop('indeterminate', false);
      }
      else
      {
        $('input', this.dom.groupButtons[j]).prop('indeterminate', true);
      }
    }
  },


  /**
   * Loop through the groups (provided in the settings) and create a button for each.
   *  @method  _fnAddgroups
   *  @returns void
   *  @private
   */
  "_fnAddGroups": function ()
  {
    var nButton;

    if ( typeof this.s.aoGroups != 'undefined' )
    {
      for ( var i=0, iLen=this.s.aoGroups.length ; i<iLen ; i++ )
      {
        nButton = this._fnDomGroupButton( i );
        this.dom.groupButtons.push( nButton );
        this.dom.buttons.push( nButton );
        this.dom.collection.appendChild( nButton );
      }
    }
  },


  /**
   * Loop through the columns in the table and as a new button for each one.
   *  @method  _fnAddButtons
   *  @returns void
   *  @private
   */
  "_fnAddButtons": function ()
  {
    var
      nButton,
      columns = this.s.dt.aoColumns;

    if ( $.inArray( 'all', this.s.aiExclude ) === -1 ) {
      for ( var i=0, iLen=columns.length ; i<iLen ; i++ )
      {
        if ( $.inArray( i, this.s.aiExclude ) === -1 )
        {
          nButton = this._fnDomColumnButton( i );
          nButton.__columnIdx = i;
          this.dom.buttons.push( nButton );
        }
      }
    }

    if ( this.s.order === 'alpha' ) {
      this.dom.buttons.sort( function ( a, b ) {
        var titleA = columns[ a.__columnIdx ].sTitle;
        var titleB = columns[ b.__columnIdx ].sTitle;

        return titleA === titleB ?
          0 :
          titleA < titleB ?
            -1 :
            1;
      } );
    }

    if ( this.s.restore )
    {
      nButton = this._fnDomRestoreButton();
      nButton.className += " ColVis_Restore";
      this.dom.buttons.push( nButton );
    }

    if ( this.s.showAll )
    {
      nButton = this._fnDomShowXButton( this.s.showAll, true );
      nButton.className += " ColVis_ShowAll";
      this.dom.buttons.push( nButton );
    }

    if ( this.s.showNone )
    {
      nButton = this._fnDomShowXButton( this.s.showNone, false );
      nButton.className += " ColVis_ShowNone";
      this.dom.buttons.push( nButton );
    }

    $(this.dom.collection).append( this.dom.buttons );
  },


  /**
   * Create a button which allows a "restore" action
   *  @method  _fnDomRestoreButton
   *  @returns {Node} Created button
   *  @private
   */
  "_fnDomRestoreButton": function ()
  {
    var
      that = this,
      dt = this.s.dt;

    return $(
        '<li class="ColVis_Special '+(dt.bJUI ? 'ui-button ui-state-default' : '')+'">'+
          this.s.restore+
        '</li>'
      )
      .click( function (e) {
        for ( var i=0, iLen=that.s.abOriginal.length ; i<iLen ; i++ )
        {
          that.s.dt.oInstance.fnSetColumnVis( i, that.s.abOriginal[i], false );
        }
        that._fnAdjustOpenRows();
        that.s.dt.oInstance.fnAdjustColumnSizing( false );
        that.s.dt.oInstance.fnDraw( false );
      } )[0];
  },


  /**
   * Create a button which allows show all and show node actions
   *  @method  _fnDomShowXButton
   *  @returns {Node} Created button
   *  @private
   */
  "_fnDomShowXButton": function ( str, action )
  {
    var
      that = this,
      dt = this.s.dt;

    return $(
        '<li class="ColVis_Special '+(dt.bJUI ? 'ui-button ui-state-default' : '')+'">'+
          str+
        '</li>'
      )
      .click( function (e) {
        for ( var i=0, iLen=that.s.abOriginal.length ; i<iLen ; i++ )
        {
          if (that.s.aiExclude.indexOf(i) === -1)
          {
            that.s.dt.oInstance.fnSetColumnVis( i, action, false );
          }
        }
        that._fnAdjustOpenRows();
        that.s.dt.oInstance.fnAdjustColumnSizing( false );
        that.s.dt.oInstance.fnDraw( false );
      } )[0];
  },


  /**
   * Create the DOM for a show / hide group button
   *  @method  _fnDomGroupButton
   *  @param {int} i Group in question, order based on that provided in settings
   *  @returns {Node} Created button
   *  @private
   */
  "_fnDomGroupButton": function ( i )
  {
    var
      that = this,
      dt = this.s.dt,
      oGroup = this.s.aoGroups[i];

    return $(
        '<li class="ColVis_Special '+(dt.bJUI ? 'ui-button ui-state-default' : '')+'">'+
          '<label>'+
            '<input type="checkbox" />'+
            '<span>'+oGroup.sTitle+'</span>'+
          '</label>'+
        '</li>'
      )
      .click( function (e) {
        var showHide = !$('input', this).is(":checked");
        if (  e.target.nodeName.toLowerCase() !== "li" )
        {
          showHide = ! showHide;
        }

        for ( var j=0 ; j < oGroup.aiColumns.length ; j++ )
        {
          that.s.dt.oInstance.fnSetColumnVis( oGroup.aiColumns[j], showHide );
        }
      } )[0];
  },


  /**
   * Create the DOM for a show / hide button
   *  @method  _fnDomColumnButton
   *  @param {int} i Column in question
   *  @returns {Node} Created button
   *  @private
   */
  "_fnDomColumnButton": function ( i )
  {
    var
      that = this,
      column = this.s.dt.aoColumns[i],
      dt = this.s.dt;

    var title = this.s.fnLabel===null ?
      column.sTitle :
      this.s.fnLabel( i, column.sTitle, column.nTh );

    return $(
        '<li '+(dt.bJUI ? 'class="ui-button ui-state-default"' : '')+'>'+
          '<label>'+
            '<input type="checkbox" />'+
            '<span>'+title+'</span>'+
          '</label>'+
        '</li>'
      )
      .click( function (e) {
        var showHide = !$('input', this).is(":checked");
        if (  e.target.nodeName.toLowerCase() !== "li" )
        {
          showHide = ! showHide;
        }

        /* Need to consider the case where the initialiser created more than one table - change the
         * API index that DataTables is using
         */
        var oldIndex = $.fn.dataTableExt.iApiIndex;
        $.fn.dataTableExt.iApiIndex = that._fnDataTablesApiIndex.call(that);

        // Optimisation for server-side processing when scrolling - don't do a full redraw
        if ( dt.oFeatures.bServerSide )
        {
          that.s.dt.oInstance.fnSetColumnVis( i, showHide, false );
          that.s.dt.oInstance.fnAdjustColumnSizing( false );
          if (dt.oScroll.sX !== "" || dt.oScroll.sY !== "" )
          {
            that.s.dt.oInstance.oApi._fnScrollDraw( that.s.dt );
          }
          that._fnDrawCallback();
        }
        else
        {
          that.s.dt.oInstance.fnSetColumnVis( i, showHide );
        }

        $.fn.dataTableExt.iApiIndex = oldIndex; /* Restore */

        if ( e.target.nodeName.toLowerCase() === 'input' && that.s.fnStateChange !== null )
        {
          that.s.fnStateChange.call( that, i, showHide );
        }
      } )[0];
  },


  /**
   * Get the position in the DataTables instance array of the table for this
   * instance of ColVis
   *  @method  _fnDataTablesApiIndex
   *  @returns {int} Index
   *  @private
   */
  "_fnDataTablesApiIndex": function ()
  {
    for ( var i=0, iLen=this.s.dt.oInstance.length ; i<iLen ; i++ )
    {
      if ( this.s.dt.oInstance[i] == this.s.dt.nTable )
      {
        return i;
      }
    }
    return 0;
  },


  /**
   * Create the element used to contain list the columns (it is shown and
   * hidden as needed)
   *  @method  _fnDomCollection
   *  @returns {Node} div container for the collection
   *  @private
   */
  "_fnDomCollection": function ()
  {
    return $('<ul />', {
        'class': !this.s.dt.bJUI ?
          "ColVis_collection" :
          "ColVis_collection ui-buttonset ui-buttonset-multi"
      } )
    .css( {
      'display': 'none',
      'opacity': 0,
      'position': ! this.s.bCssPosition ?
        'absolute' :
        ''
    } )[0];
  },


  /**
   * An element to be placed on top of the activate button to catch events
   *  @method  _fnDomCatcher
   *  @returns {Node} div container for the collection
   *  @private
   */
  "_fnDomCatcher": function ()
  {
    var
      that = this,
      nCatcher = document.createElement('div');
    nCatcher.className = "ColVis_catcher";

    $(nCatcher).click( function () {
      that._fnCollectionHide.call( that, null, null );
    } );

    return nCatcher;
  },


  /**
   * Create the element used to shade the background, and capture hide events (it is shown and
   * hidden as needed)
   *  @method  _fnDomBackground
   *  @returns {Node} div container for the background
   *  @private
   */
  "_fnDomBackground": function ()
  {
    var that = this;

    var background = $('<div></div>')
      .addClass( 'ColVis_collectionBackground' )
      .css( 'opacity', 0 )
      .click( function () {
        that._fnCollectionHide.call( that, null, null );
      } );

    /* When considering a mouse over action for the activation, we also consider a mouse out
     * which is the same as a mouse over the background - without all the messing around of
     * bubbling events. Use the catcher element to avoid messing around with bubbling
     */
    if ( this.s.activate == "mouseover" )
    {
      background.mouseover( function () {
        that.s.overcollection = false;
        that._fnCollectionHide.call( that, null, null );
      } );
    }

    return background[0];
  },


  /**
   * Show the show / hide list and the background
   *  @method  _fnCollectionShow
   *  @returns void
   *  @private
   */
  "_fnCollectionShow": function ()
  {
    var that = this, i, iLen, iLeft;
    var oPos = $(this.dom.button).offset();
    var nHidden = this.dom.collection;
    var nBackground = this.dom.background;
    var iDivX = parseInt(oPos.left, 10);
    var iDivY = parseInt(oPos.top + $(this.dom.button).outerHeight(), 10);

    if ( ! this.s.bCssPosition )
    {
      nHidden.style.top = iDivY+"px";
      nHidden.style.left = iDivX+"px";
    }

    $(nHidden).css( {
      'display': 'block',
      'opacity': 0
    } );

    nBackground.style.bottom ='0px';
    nBackground.style.right = '0px';

    var oStyle = this.dom.catcher.style;
    oStyle.height = $(this.dom.button).outerHeight()+"px";
    oStyle.width = $(this.dom.button).outerWidth()+"px";
    oStyle.top = oPos.top+"px";
    oStyle.left = iDivX+"px";

    document.body.appendChild( nBackground );
    document.body.appendChild( nHidden );
    document.body.appendChild( this.dom.catcher );

    /* This results in a very small delay for the end user but it allows the animation to be
     * much smoother. If you don't want the animation, then the setTimeout can be removed
     */
    $(nHidden).animate({"opacity": 1}, that.s.iOverlayFade);
    $(nBackground).animate({"opacity": 0.1}, that.s.iOverlayFade, 'linear', function () {
      /* In IE6 if you set the checked attribute of a hidden checkbox, then this is not visually
       * reflected. As such, we need to do it here, once it is visible. Unbelievable.
       */
      if ( $.browser && $.browser.msie && $.browser.version == "6.0" )
      {
        that._fnDrawCallback();
      }
    });

    /* Visual corrections to try and keep the collection visible */
    if ( !this.s.bCssPosition )
    {
      iLeft = ( this.s.sAlign=="left" ) ?
        iDivX :
        iDivX - $(nHidden).outerWidth() + $(this.dom.button).outerWidth();

      nHidden.style.left = iLeft+"px";

      var iDivWidth = $(nHidden).outerWidth();
      var iDivHeight = $(nHidden).outerHeight();
      var iDocWidth = $(document).width();

      if ( iLeft + iDivWidth > iDocWidth )
      {
        nHidden.style.left = (iDocWidth-iDivWidth)+"px";
      }
    }

    this.s.hidden = false;
  },


  /**
   * Hide the show / hide list and the background
   *  @method  _fnCollectionHide
   *  @returns void
   *  @private
   */
  "_fnCollectionHide": function (  )
  {
    var that = this;

    if ( !this.s.hidden && this.dom.collection !== null )
    {
      this.s.hidden = true;

      $(this.dom.collection).animate({"opacity": 0}, that.s.iOverlayFade, function (e) {
        this.style.display = "none";
      } );

      $(this.dom.background).animate({"opacity": 0}, that.s.iOverlayFade, function (e) {
        document.body.removeChild( that.dom.background );
        document.body.removeChild( that.dom.catcher );
      } );
    }
  },


  /**
   * Alter the colspan on any fnOpen rows
   */
  "_fnAdjustOpenRows": function ()
  {
    var aoOpen = this.s.dt.aoOpenRows;
    var iVisible = this.s.dt.oApi._fnVisbleColumns( this.s.dt );

    for ( var i=0, iLen=aoOpen.length ; i<iLen ; i++ ) {
      aoOpen[i].nTr.getElementsByTagName('td')[0].colSpan = iVisible;
    }
  }
};





/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Static object methods
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * Rebuild the collection for a given table, or all tables if no parameter given
 *  @method  ColVis.fnRebuild
 *  @static
 *  @param   object oTable DataTable instance to consider - optional
 *  @returns void
 */
ColVis.fnRebuild = function ( oTable )
{
  var nTable = null;
  if ( typeof oTable != 'undefined' )
  {
    nTable = oTable.fnSettings().nTable;
  }

  for ( var i=0, iLen=ColVis.aInstances.length ; i<iLen ; i++ )
  {
    if ( typeof oTable == 'undefined' || nTable == ColVis.aInstances[i].s.dt.nTable )
    {
      ColVis.aInstances[i].fnRebuild();
    }
  }
};


ColVis.defaults = {
  /**
   * Mode of activation. Can be 'click' or 'mouseover'
   *  @property activate
   *  @type     string
   *  @default  click
   */
  active: 'click',

  /**
   * Text used for the button
   *  @property buttonText
   *  @type     string
   *  @default  Show / hide columns
   */
  buttonText: 'Show / hide columns',

  /**
   * List of columns (integers) which should be excluded from the list
   *  @property aiExclude
   *  @type     array
   *  @default  []
   */
  aiExclude: [],

  /**
   * Show restore button
   *  @property bRestore
   *  @type     boolean
   *  @default  false
   */
  bRestore: false,

  /**
   * Restore button text
   *  @property sRestore
   *  @type     string
   *  @default  Restore original
   */
  sRestore: 'Restore original',

  /**
   * Show Show-All button
   *  @property bShowAll
   *  @type     boolean
   *  @default  false
   */
  bShowAll: false,

  /**
   * Show All button text
   *  @property sShowAll
   *  @type     string
   *  @default  Restore original
   */
  sShowAll: 'Show All',

  /**
   * Position of the collection menu when shown - align "left" or "right"
   *  @property sAlign
   *  @type     string
   *  @default  left
   */
  sAlign: 'left',

  /**
   * Callback function to tell the user when the state has changed
   *  @property fnStateChange
   *  @type     function
   *  @default  null
   */
  fnStateChange: null,

  /**
   * Overlay animation duration in mS
   *  @property iOverlayFade
   *  @type     integer|false
   *  @default  500
   */
  iOverlayFade: 500,

  /**
   * Label callback for column names. Takes three parameters: 1. the
   * column index, 2. the column title detected by DataTables and 3. the
   * TH node for the column
   *  @property fnLabel
   *  @type     function
   *  @default  null
   */
  fnLabel: null,

  /**
   * Indicate if the column list should be positioned by Javascript,
   * visually below the button or allow CSS to do the positioning
   *  @property bCssPosition
   *  @type     boolean
   *  @default  false
   */
  bCssPosition: false,

  /**
   * Group buttons
   *  @property aoGroups
   *  @type     array
   *  @default  []
   */
  aoGroups: [],

  /**
   * Button ordering - 'alpha' (alphabetical) or 'column' (table column
   * order)
   *  @property order
   *  @type     string
   *  @default  column
   */
  order: 'column'
};



/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Static object properties
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * Collection of all ColVis instances
 *  @property ColVis.aInstances
 *  @static
 *  @type     Array
 *  @default  []
 */
ColVis.aInstances = [];





/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Constants
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**
 * Name of this class
 *  @constant CLASS
 *  @type     String
 *  @default  ColVis
 */
ColVis.prototype.CLASS = "ColVis";


/**
 * ColVis version
 *  @constant  VERSION
 *  @type      String
 *  @default   See code
 */
ColVis.VERSION = "1.1.1";
ColVis.prototype.VERSION = ColVis.VERSION;





/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Initialisation
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Register a new feature with DataTables
 */
if ( typeof $.fn.dataTable == "function" &&
     typeof $.fn.dataTableExt.fnVersionCheck == "function" &&
     $.fn.dataTableExt.fnVersionCheck('1.7.0') )
{
  $.fn.dataTableExt.aoFeatures.push( {
    "fnInit": function( oDTSettings ) {
      var init = oDTSettings.oInit;
      var colvis = new ColVis( oDTSettings, init.colVis || init.oColVis || {} );
      return colvis.button();
    },
    "cFeature": "C",
    "sFeature": "ColVis"
  } );
}
else
{
  alert( "Warning: ColVis requires DataTables 1.7 or greater - www.datatables.net/download");
}


// Make ColVis accessible from the DataTables instance
$.fn.dataTable.ColVis = ColVis;
$.fn.DataTable.ColVis = ColVis;


return ColVis;
}; // /factory


// Define as an AMD module if possible
if ( typeof define === 'function' && define.amd ) {
  define( ['jquery', 'datatables'], factory );
}
else if ( typeof exports === 'object' ) {
    // Node/CommonJS
    factory( require('jquery'), require('datatables') );
}
else if ( jQuery && !jQuery.fn.dataTable.ColVis ) {
  // Otherwise simply initialise as normal, stopping multiple evaluation
  factory( jQuery, jQuery.fn.dataTable );
}


})(window, document);
